2x + y = 8
3x - y = 17
---------------add
5x = 25
x = 25/5
x = 5
2x + y = 8
2(5) + y = 8
10 + y = 8
y = 8 - 10
y = -2
solution is (5,-2).....this is consistent and independent because it has one solution
Answer:
A
Step-by-step explanation:
to solve this problem, we can use the proportion method,
x /40 = 150/1
cross multiply
x (1) = (150)(4)
x = 600
Answer:
the answer is B.
Step-by-step explanation:
It makes the problem solve smoother.
Answer:
sin 70° = cos (90° - 70°)
Step-by-step explanation:
You need to use the trigonometric ratios which states that:
sin α = cos (90° - α)
sin 70° = cos (90° - 70°)
sin 70° = cos 20°
Answer:
$1.67
Step-by-step explanation:
Take the total cost and divide by the number of markers
$20/12 =1.6666666
Since we are dealing with money we round to the nearest cent
$1.67
